Adhesive



Patented May 1, 1934 UNITED STATES ADHESIVE Jacques Goldmann,Strasbourg, France, assignor to Armand Levy, Strasbourg, France N0Drawing. Application April 13, 1932, Serial No. 604,921. In France April18, 1931 2 Claims. (or. 87-17) My invention relates to a glue whichadheres to all kinds of materials, and can readily be removed again fromthem without leaving spots, said glue being moreover not subject toharden and therefore can be used for indefinite time.

The glue of this character especially suits for securing letters,ciphers or other signs to backings, a pad of glue being, to this efiect,placed on the object to be secured and the latter pressed on thebacking. If they are to be removed again, a short and energeticalpulling on the objects will be sufficient. I have found out, that byusing characters of concave-convex shape pressed out of thin sheetmetal, I obtain the best results, since in such characters the adheringsurface of the glue is of larger size than that of the flat backing towhich they are secured and therefore the glue pad always remainssticking to the character, when the latter is removed from the backing.

My invention also relates to the manufacturing of the glue.

According to the invention, the glue comprises a composition of:

3.265 kilos of white crepe rubber 3.605 kilos of factis 0.400 kilos ofresin 1.300 kilos of benzene 5.167 kilos of methylhexalinhydrogenesterof adipic acid 10.815 kilos of chalk the rubber and factis being mixedup at a temperature of '75-80 C., the benzene and resin also being mixedup separately and then added to the rubber mixture. Finally themethylhexalinhydrogenester of adipic acid is added for the same purposeas the resin mixture i. e. for liquefying the mass and then the chalk inorder to obtain a pasty consistency.

I claim:

1. A glue adhering to all kind of materials comprising a composition of2 3.265 kilos of white crepe rubber 3.605 kilos of factis 0.400 kilos ofresin 1.300 kilos of benzene 5.167 kilos of methylhexalinhydrogenesterof the adipic acid 10.815 kilos of chalk.

2. A process of manufacturing the glue according to claim 1, consistingin mixing up at a temperature of -80 C. the rubber and the factis, inmixing up the benzene and resin, in adding the latter to the formermixture, in liquefying the whole mixture by addition of themethylhexalinhydrogenester of the adipic acid and in then adding thechalk.

JACQUES GOLDMANN.

